Bump elasticsearch from 1.4.0 to 6.8.15 in /dspace-api#23

dependabot[bot] wants to merge 1 commit intomasteratmire/HAL6:masterfrom

dependabot/maven/dspace-api/org.elasticsearch-elasticsearch-6.8.15atmire/HAL6:dependabot/maven/dspace-api/org.elasticsearch-elasticsearch-6.8.15Copy head branch name to clipboard